Process for producing pure water

Details Process for producing pure water Process for producing pure water

1997-03-26

1999-09-21

Cintins, Ivars

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210683, 210685, 210686, 210900, C02F 142, C02F 900

Patent

active

059549653

ABSTRACT:
The present invention relates to a process for producing pure water having a total organic carbon content of not more than 200 ppb instantly after start of the operation of a high purity water system, comprising using as an ion exchange resin a specific strongly basic anion exchange resin and passing raw water through the high purity water system at a space velocity of not less than 20. The produced pure water is capable of producing tasteless and odorless pure water instantly after start of the operation of the high purity water system.

REFERENCES:
patent: 3870033 (1975-03-01), Faylor et al.
patent: 3883490 (1975-05-01), Fujimoto et al.
patent: 5292439 (1994-03-01), Morita et al.
patent: 5350523 (1994-09-01), Tomoi et al.
patent: 5518627 (1996-05-01), Tomoi et al.
Wataru Agui et al, Bull Chem. So. Jpn., vol. 63, No. 10, pp. 2872-2876, 1990, "Fundamental Study on the Production of Ultrapure Water VIII. Removal of Leachables from Mixed-Bed Ion Exchange Resins".
Ikuo Shindoh, R&D Headquaters, UPW Technical Center, JAPAN ORGANO Co, Ltd., vol. 2, No. 2, pp. 69-82, 1991, "ION Exchange Resins for Ultra Pure Water Production".
Friedrich Helfferich, McGraw-Hill Book Company, Inc., pp. 46-49, 1962, "ION EXCHANGE".
Mitsubishi Kasei R&D Review, vol. 8, No. 2, pp. 120-121, 1994.

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